Hemilamprops pellucidus Zimmer, 1908

Gerken, Sarah, 2018, The Lampropidae (Crustacea: Cumacea) of the World, Zootaxa 4428 (1), pp. 1-192 : 80

Hemilamprops pellucidus Zimmer, 1908

Hemilamprops pellucida Zimmer, 1908: 171–172 , pl. 39 figs 53–54, pl. 40 figs 55–59.

Type material. Syntypes: ZMB 13361, juvenile female, juvenile male. Agulhas Bank, 35°09’S, 18°32’E .

Diagnosis. Carapace without lateral ridges, without setae, dorsal crest serrate, eyelobe serrate. Pleonites without dorsal crest. Telson 0.7 length of uropod peduncles, with 7 pairs lateral setae, 3 terminal setae. Uropod exopod article 1 1.3 length of article 2. Adult male telson with 4 pairs lateral setae.

Depth. 226–3725 m.

Distribution. Southern oceans, from Brazil to South Africa, Australia and Antarctic.

Remarks. The distribution for this species is excessive, given the generally low dispersal capabilities in the Cumacea . It is likely that the records represent a group of species that are large and similar in carapace morphology, particularly in having a distinct dorsal crest that continues onto the eyelobe and a relatively long pseudorostrum. The most similar species is Hemilamprops impellucidus n. sp., which can be differentiated by the antennule flagellum with five long slender articles, eyelobe with lenses, telson similar in length to uropod peduncles, and unequal telson terminal setae with the central seta longer than the outer pair, while in H. pellucidus the antennule flagellum is of four short, stout articles, the eyelobe is without lenses, the telson is much shorter than the uropod peduncles, and the telson terminal setae are equal in length. Another similar species is H. cristatus from the North Atlantic, which can be differentiated by four or fewer pairs of lateral setae on the telson, while in H. pellucidus there are at least five pairs of lateral setae on the telson.